The talk gives a short introduction to the world of barcodes, then explains the reasoning behind the TOC of my book where barcodes provide the common thread through all chapters.
I recorded the talk with QuickTime Player and better sound with a lapel mic, but after upload I discovered I had used the lesser quality audio recorded with the screen capture. But I decided against replacing the video since you can hear some of the audience reactions this way. Slides are available as PDF.
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